<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8" />
		<title></title>
		<style>
			body{
				display: flex;
			}
			div{
				width: 200px;
				height: 200px;
				border: 15px dotted black;
				background-color: yellowgreen;
				padding: 10px;
				margin: 5px;
				background-repeat: no-repeat;
				background-image:url(img/女士.jpg) ;
				background-size: 40%;
			}
			.a1{
				background-origin: border-box;
			}
			.a2{
				background-origin:padding-box;
			}
			.a3{
				background-origin: content-box;
			}
		</style>
	</head>
	<body>
		<div class="a1"></div>
		<div class="a2"></div>
		<div class="a3"></div>
	</body>
</html>
